If you really don't want it to shrink, here's what to do:
Hand or machine wash w cold water. Then, for drying, take the bottom of your tee and put it over the top of a door and close the door so that the tee hangs upside down from the door. The put a coat hanger inside your tee like you would do to a shirt, only that it is hanging upside down. Then, put some weights in a bag and put it on the end of the upside down hanger so that it s stretching the tee down. I'm not sure if you can follow that but it works for me and is really less complicated than it sounds